Risk magazine - Volume17/No5

Practical relative-value volatility trading

The rapid growth of fixed-income hedge funds has resulted in increased interest in identifying relative-value trade opportunities. Here, the author presents a consistent framework for finding value within interest rate options markets.

An arbitrage-free interpolation of volatilities

Nabil Kahalé describes a new construction of an implied volatilities surface from a discrete set of implied volatilities that is arbitrage-free and satisfies some smoothness conditions. His method provides an excellent fit to the smile of the local…

Smile at the uncertainty

Smile-consistent alternatives to the Black-Scholes model are often too cumbersome to be used for large portfolios of exotic options. Damiano Brigo, Fabio Mercurio and Francesco Rapisarda propose an intuitive stochastic volatility model that is easy to…

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